How to Troubleshoot the Exhaust System in a Honda CR-V
Handle difficulties with your CR-V exhaust system by identifying the problem. Look over core devices from the engine to the tailpipe because exhaust system problems could stem from different areas. Troubleshoot the exhaust system in a Honda CR-V by dealing with warning signs from system devices. Join a mechanic and use these steps for most model years.
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Instructions
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Check the exhaust manifold and cylinder head for leakage. Heat expansion and contraction could cause leaks to occur at the point where these devices connect. Shear stress pressures the exhaust manifold gasket when you crank up, drive or shut off your CR-V. This can cause leaks.
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Pay attention to any popping or hissing sounds while running the engine. Inspect the exhaust ports on the cylinder head for signs of paint discoloration or burns. See if your spark plug wires and boots have burns.
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Inspect the area joining the exhaust manifold and head pipe. The back-and-forth motion of your engine caused by drive torque leads to movement at the joint where the head pipe connects to the exhaust manifold. Look for discoloration caused by hot gases that escaped this area. This pertains to the 2.0L 4-cylinder DOHC engine.
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See if the exhaust pipes show damage. Use large pliers to pressure the pipes. Replace pipes that break or give under pressure and keep the engine on when testing the system. It proves easier to pinpoint leaks and other problems with the engine running.
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Listen for odd noises coming from exhaust areas near your muffler. For instance, a buzzing sound that increases with acceleration could reveal exhaust system problems. A whistle sound or high-pitched hissing noise in the tailpipe could originate from system restrictions. Seek a mechanic to read your engine intake manifold vacuum. Low readings reflect blockage.
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Tips & Warnings
Immediately take care of exhaust system problems. A leak could result in death because carbon monoxide, an odorless and colorless gas, could wind up inside the vehicle killing or impairing the driver and passengers.
